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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Assertion: Only a small amount of HCl is required in the reduction of nitro compounds with iron scrap and HCl in the presence of steam. Reason: FeClX2 formed gets hydrolysed to release HCl during the

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प्रश्न

Assertion: Only a small amount of \[\ce{HCl}\] is required in the reduction of nitro compounds with iron scrap and \[\ce{HCl}\] in the presence of steam.

Reason: \[\ce{FeCl2}\] formed gets hydrolysed to release \[\ce{HCl}\] during the reaction.

विकल्प

  • Both assertion and reason are wrong.

  • Both assertion and reason are correct statements but reason is not correct explanation of assertion.

  • Assertion is correct statement but reason is wrong statement.

  • Both assertion and reason are correct statements and reason is correct explanation of assertion.

  • Assertion is wrong statement but reason is correct statement.

MCQ
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उत्तर

Both assertion and reason are correct statements and reason is correct explanation of assertion.

Explanation:

\[\ce{Fe + 2HCl ->FeCl2 + 2[H] FeCl2 + H2O(g) -> FeO + 2HCl}\]

The nascent hydrogen formed act as is reducing agent for the reduction of nitro compounds.

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अध्याय 13: Amines - Multiple Choice Questions (Type - I) [पृष्ठ १९२]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
अध्याय 13 Amines
Multiple Choice Questions (Type - I) | Q 72 | पृष्ठ १९२

संबंधित प्रश्न

Write a short note on the following:

Hoffmann’s bromamide reaction


Give the structures of A, B and C in the following reaction:

\[\ce{C6H5NO2 ->[Fe/HCl] A ->[HNO2][273 K] B ->[C6H5OH] C}\]


Write the reaction of aliphatic primary amine with nitrous acid.


Why cannot aniline be prepared by Gabriel phthalimide synthesis?


Alkyl cyanides on reduction by sodium and ethanol give primary amines. This reaction is called as ____________.


____________ can be prepared exclusively by Gabriel phthalimide synthesis.


What product is formed when \[\ce{R - C ≡ N}\] is hydrolysed?


Which nitrogen containing compound amongst the following would undergo Mendius reduction to furnish primary amine \[\ce{(R - NH2)}\]?


Which of the following reagents is used in Mendius reduction reaction of alkyl cyanide?


Which of the following amines cannot be prepared by Gabriel phthalimide synthesis?


Which of the following compounds is obtained when quaternary ammonium hydroxide is strongly heated?


Quaternary ammonium salt is formed:


Amongst the given set of reactants, the most appropriate for preparing 2° amine is ______.


The best reagent for converting 2–phenylpropanamide into 2-phenylpropanamine is ______.


Among the following amines, the strongest Brönsted base is:


Under which of the following reaction conditions, aniline gives p-nitro derivative as the major product?

(i) Acetyl chloride/pyridine followed by reaction with conc.\[\ce{H2SO4 }\] + conc. \[\ce{HNO3}\].

(ii) Acetic anyhdride/pyridine followed by conc.\[\ce{H2SO4}\] + conc.\[\ce{HNO3}\].

(iii) Dil. HCl followed by reaction with conc.\[\ce{H2SO4}\] + conc.\[\ce{HNO3}\].

(iv) Reaction with conc.\[\ce{HNO3}\] + conc.\[\ce{H2 SO4}\].


Which of the following compound gives pink colour on reaction with phthalic anhydride in cone. H2SO4 followed by treatment with NaOH?


Amides can be converted into amines by the reaction named ______.


Write short note on the following:

Ammonolysis


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